C.C. Tsuei, J.R. Kirtley
Journal of Physics and Chemistry of Solids
We have used a scanning SQUID microscope to directly observe the half-integer flux quantum effect, in epitaxial films of Bi2Sr2CaCu2O8+δ, at the meeting point of a tricrystal substrate of SrTiO3 in a geometry chosen to show this effect for a d-wave superconductor. This observation, when considered along with recent photoemission results, proves that the in-plane order parameter for this high-TC cuprate superconductor closely follows dx2-y2 symmetry.
C.C. Tsuei, J.R. Kirtley
Journal of Physics and Chemistry of Solids
R.P. Huebener, F. Kober, et al.
Physica C: Superconductivity and its applications
D.M. Newns, C.C. Tsuei, et al.
Physical Review Letters
C.C. Tsuei
Journal of Low Temperature Physics